The Root Black News, Opinions, Politics and Culture. Black News, Opinions, Politics and Culture The longer I look at Sen Bernie Sanders I Vt , the he goes from being the radical old white guy with the alternative ideas to the white guy who Root Definition of Root by Merriam Webster Root definition is the usually underground part of a seed plant body that originates usually from the hypocotyl, functions as an organ of absorption, aeration, and food storage or as a means of anchorage and support